Four unidirectional channels, all on side 1
All four inputs are on side 1 (4/0 configuration), making it a straightforward choice for isolating a bank of digital signals from a microcontroller or FPGA to a secondary domain where no return data path is needed. The 2500Vrms isolation rating covers basic isolation requirements for industrial sensors, motor drives, and medical equipment where the barrier must withstand continuous voltage stress. With a 1Mbps data rate and 100ns max propagation delay, it handles moderate-speed control and status signals without timing margin issues.
25kV/µs CMTI — keeps data clean in noisy environments
Common-mode transient immunity of 25kV/µs (minimum) means the isolator rejects fast voltage spikes between the two grounds — essential in motor-drive inverters, industrial power stages, and any system with high dV/dt switching. The 2.5ns typical rise/fall time and 40ns max pulse-width distortion preserve signal integrity for pulse trains and edge-triggered inputs. Supply voltage accepts either 3V to 3.6V or 4.5V to 5.5V, allowing the same part to bridge a 3.3V logic domain to a 5V peripheral side without a level shifter.
20-SSOP package and operating range
Housed in a 20-SSOP (5.30mm width) surface-mount package, the ADUM3470ARSZ fits standard PCB layouts without requiring a dedicated isolation footprint.